摘要
通用多协议标签交换(GMPLS )是将多协议标签交换 /流量工程(MPLS-TE )进行光网络扩展,并被广泛接受作为自动交换光网络(ASON )控制面协议的理想选择,然而标准化组织正讨论研究将专用网网间接口( PNNI )协议用于 ASON 控制面的潜力。文中主要通过对 PNNI 的路由分层概念、 PNNI 的路由信息分发机制和 PNNI 的路径选择机制的介绍,给出 PNNI 路由的几个扩展,以适合 ASON 的路由需求。
GMPLS, which leverages the MPLS traffic engineering mechanisms for optical networks, are widely accepted as the most appropriate choice to implement the ASON control plane. However, the potential use of private network-network interface (PNNI) in ASONs has been discussed as an alternative proposal by the standardization bodies. This paper mainly gives an adaptation of PNNI routing protocol to fit the requirements of the ASON network. The adaptation can be divided into three parts: the PNNI routing hierarchy, the network routing information dissemination process and the path selection mechanism.
出处
《电信快报》
2004年第8期17-19,共3页
Telecommunications Information
